Window unit assembly station and method

ABSTRACT

An insulated glass unit (IGU) assembly station can include an assembly table, a conveyor assembly, and a projection component. The assembly table can have a table surface configured to receive first and second transparent window components, the table surface being positioned at an incline relative to a vertical position. The conveyor assembly can be configured to translate the first and second transparent window components along a translation pathway from a first end of the table surface to a second end of the table surface, the translation pathway being substantially parallel to the table surface. The projection component can be adjacent to the assembly table and can be configured to engage the first transparent window component to translate at least a bottom portion of the first transparent window component between an initial position and a first assembly position offset from the translation pathway.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the benefit of U.S. Provisional Application No.61/755,263, filed on Jan. 22, 2013 and U.S. Provisional Application No.61/781,597, filed on Mar. 14, 2013. The entire disclosure of each of theabove applications is incorporated herein by reference.

FIELD OF THE INVENTION

The present disclosure relates to the manufacture of window units and,more particularly, to a window unit assembly station and method.

BACKGROUND

This section provides background information related to the presentdisclosure which is not necessarily prior art.

An insulated glass unit (IGU) includes two or more transparent windowcomponents, e.g., panes of glass, arranged such that there is a spacebetween each of the transparent window components. One or more physicalspacers can be inserted between the transparent window components tocreate the spaces between the transparent window components. The spacescan be filled with air or another gas, e.g., argon, or pumped down to anear-vacuum pressure. The IGU can then be sealed to prevent air and/ormoisture from entering the spaces between the transparent windowcomponents. IGUs can provide for decreased heat transfer between the twoor more transparent window components, which results in better thermalinsulation by the IGUs.

SUMMARY

This section provides a general summary of the disclosure, and is not acomprehensive disclosure of its full scope or all of its features.

An insulated glass unit (IGU) assembly station is presented. The IGUassembly station can include an assembly table having a table surfaceconfigured to receive first and second transparent window components,the table surface being positioned at an incline relative to a verticalposition. The IGU assembly station can include a conveyor assemblyconfigured to translate the first and second transparent windowcomponents along a translation pathway from a first end of the tablesurface to a second end of the table surface, the translation pathwaybeing substantially parallel to the table surface. The IGU assemblystation can also include a projection component adjacent to the assemblytable and configured to engage the first transparent window component totranslate at least a bottom portion of the first transparent windowcomponent between an initial position and a first assembly positionoffset from the translation pathway.

In some embodiments, the projection component has a receiving surfacebetween first and second edges, the receiving surface being configuredto receive a bottom edge of the first transparent window component,wherein the projection component further includes an extension surfaceconfigured to merge with the translation pathway upon extension of theprojection component to the first assembly position.

In other embodiments, the IGU assembly station further includes a pressbar extending substantially across the table surface and translatableboth substantially parallel to the table surface and substantiallyperpendicular to the table surface, the press bar being configured toboth push a front surface of the first transparent window component andsupport a back surface of the first transparent window component.

In some embodiments, the conveyor assembly is configured to translatethe second transparent window component to a second assembly positionwhere the second transparent window component is substantially parallelto the table surface and behind the first transparent window componentafter the first transparent window component is extended to the firstassembly position, wherein the second transparent window component has aspacer frame attached thereto.

In other embodiments, in response to the conveyor assembly translatingthe second transparent window component to the second assembly position,the press bar is configured to push against the front surface of thefirst transparent window component to connect at least a top portion ofthe first transparent window component to at least a top portion of thespacer frame to form a partially-mated IGU.

In some embodiments, the partially-mated IGU includes a gap between thebottom portion of the first transparent window component and a bottomportion of the spacer frame for receiving gas to form a gas-filled IGU.

In other embodiments, the assembly table has a groove through the tablesurface, wherein the press bar includes a finger extending from thepress bar towards the table surface, wherein the finger is configured tobe received by the groove at the initial position of the firsttransparent window component, and wherein the finger is configured toengage a top edge of the first transparent window component and tosupport the back surface of the first transparent window component whenthe first transparent window component is offset from the table surfaceat the first assembly position.

In some embodiments, in response to the conveyor assembly translatingthe second transparent window component to the second assembly position,the finger is configured to disengage the top edge of the firsttransparent window component and the press bar is configured to pushagainst the front surface of the first transparent window component toconnect at least a top portion of the first transparent window componentto at least a top portion of the spacer frame to form a partially-matedIGU.

In other embodiments, the partially-mated IGU includes a gap between thebottom portion of the first transparent window component and a bottomportion of the spacer frame for receiving gas to form a gas-filled IGU.

In some embodiments, the conveyor assembly is configured to translatethe second transparent window component and a third transparent windowcomponent to a second assembly position where the second and thirdtransparent window components are substantially parallel to the tablesurface and behind the first transparent window component after thefirst transparent window component is extended to the first assemblyposition, wherein the second and third transparent window componentshave one or more spacer frames attached thereto.

In other embodiments, in response to the conveyor assembly translatingthe second and third transparent window components to the secondassembly position, the press bar is configured to push against the frontsurface of the first transparent window component to connect at least atop portion of the first transparent window component to at least a topportion of one of the one or more spacer frames to obtain apartially-mated IGU.

In some embodiments, the partially-mated IGU includes a gap between thebottom portion of the first transparent window component and a bottomportion of the one of the one or more spacer frames for receiving gas toform a gas-filled IGU.

In other embodiments, the assembly table has a groove through the tablesurface, wherein the press bar includes a finger extending from thepress bar towards the table surface, wherein the finger is configured tobe received by the groove at the initial position of the firsttransparent window component, and wherein the finger is configured toengage a top edge of the first transparent window component and tosupport the back surface of the first transparent window component whenthe first transparent window component is offset from the table surfaceat the first assembly position.

In some embodiments, in response to the conveyor assembly translatingthe second and third transparent window components to the secondassembly position, the finger is configured to disengage the top edge ofthe first transparent window component and the press bar is configuredto push against the front surface of the first transparent windowcomponent to connect at least a top portion of the first transparentwindow component to at least a top portion of one of the one or morespacer frames to obtain a partially-mated IGU.

In other embodiments, the partially-mated IGU includes a gap between thebottom portion of the first transparent window component and a bottomportion of the one of the one or more spacer frames for receiving gas toform a gas-filled IGU.

A method of assembling an IGU is also presented. The method can includereceiving first and second transparent window components at a tablesurface of an assembly station, the table surface being positioned at anincline relative to a vertical position. The method can includetranslating the first and second transparent window components along atranslation pathway from a first end of the table surface to a secondend of the table surface, the translation pathway being substantiallyparallel to the table surface. The method can include engaging the firsttransparent window component with a projection component. The method caninclude translating at least a bottom portion of the first transparentwindow component with the projection component between an initialposition and a first assembly position offset from the translationpathway. The method can also include bringing the first transparentwindow component from the first assembly position into contact with thesecond transparent window component to form the IGU.

In some embodiments, engaging the first transparent window component andtranslating at least the bottom portion of the first transparent windowcomponent with the projection component further includes: receiving abottom edge of the first transparent window component at a receivingsurface defined between first and second edges of the projectioncomponent, and merging an extension surface of the projection componentwith the translation pathway upon extension of the projection componentto the first assembly position.

In other embodiments, the method further includes engaging a press barwith a top portion of the first transparent window component, the pressbar being configured to both push a front surface of the firsttransparent window component and support a back surface of the firsttransparent window component when the first transparent window componentis offset from the table surface.

In some embodiments, the method further includes translating the secondtransparent window component to a second assembly position such that thesecond transparent window component is substantially parallel to thetable surface and behind the first transparent window component afterthe first transparent window component is extended to the first assemblyposition, wherein the second transparent window component has a spacerframe attached thereto.

In other embodiments, the method further includes, in response to theconveyor assembly translating the second transparent window component tothe second assembly position, pushing the press bar against the frontsurface of the first transparent window component to connect at least atop portion of the first transparent window component to at least a topportion of the spacer frame to form a partially-mated IGU.

In some embodiments, the partially-mated IGU includes a gap between thebottom portion of the first transparent window component and a bottomportion of the spacer frame for receiving gas to form a gas-filled IGU.

In other embodiments, the method further includes receiving a finger ofthe press bar in a groove through the table surface at the initialposition of the first transparent window component, the finger beingconfigured to engage a top edge of the first transparent windowcomponent and to support the back surface of the first transparentwindow component when the first transparent window component is offsetfrom the table surface at the first assembly position.

In some embodiments, the method further includes, in response to theconveyor assembly translating the second transparent window component tothe second assembly position, disengaging the finger from the top edgeof the first transparent window component and pushing the press baragainst the front surface of the first transparent window component toconnect at least a top portion of the first transparent window componentto at least top portion of the spacer frame to form a partially-matedIGU.

In other embodiments, the partially-mated IGU includes a gap between thebottom portion of the first transparent window component and a bottomportion of the spacer frame for receiving gas to form a gas-filled IGU.

In some embodiments, the method further includes translating the secondtransparent window component and a third transparent window component toa second assembly position where the second and third transparent windowcomponents are substantially parallel to the table surface and behindthe first transparent window component after the first transparentwindow component is extended to the first assembly position, wherein thesecond and third transparent window components have one or more spacerframes attached thereto.

In other embodiments, the method further includes, in response to theconveyor assembly translating the second and third transparent windowcomponents to the second assembly position, pushing the press baragainst the front surface of the first transparent window component toconnect at least a top portion of the first transparent window componentto at least a top portion of one of the one or more spacer frames toobtain a partially-mated IGU.

In some embodiments, the partially-mated IGU includes a gap between thebottom portion of the first transparent window component and a bottomportion of the one of the one or more spacer frames for receiving gas toform a gas-filled IGU.

In other embodiments, the method further includes receiving a finger ofthe press bar in a groove through the table surface at the initialposition of the first transparent window component, the finger beingconfigured to engage a top edge of the first transparent windowcomponent and to support the back surface of the first transparentwindow component when the first transparent window component is offsetfrom the table surface at the first assembly position.

In some embodiments, the method further includes, in response to theconveyor assembly translating the second and third transparent windowcomponents to the second assembly position, disengaging the finger fromthe top edge of the first transparent window component pushing the pressbar against the front surface of the first transparent window componentto connect a top portion of the first transparent window component to atop portion of one of the one or more spacer frames to obtain apartially-mated IGU.

In some embodiments, the partially-mated IGU includes a gap between thebottom portion of the first transparent window component and a bottomportion of the one of the one or more spacer frames for receiving gas toform a gas-filled IGU.

Further areas of applicability will become apparent from the descriptionprovided herein. The description and specific examples in this summaryare intended for purposes of illustration only and are not intended tolimit the scope of the present disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention may be more completely understood and appreciated inconsideration of the following detailed description of variousembodiments of the invention in connection with the accompanyingdrawings.

FIG. 1 depicts a perspective view of an assembly station consistent withthe technology disclosed herein.

FIG. 2 depicts a front view of the assembly station consistent with FIG.1.

FIG. 3 depicts an end view of the assembly station consistent with FIG.1.

FIG. 4 is a schematic representation of a first step of a process,consistent with the technology disclosed herein.

FIG. 5 is a schematic representation of a second step of a process,consistent with the technology disclosed herein.

FIG. 6 is a schematic representation of a third step of a process,consistent with the technology disclosed herein.

FIG. 7 is a schematic representation of a fourth step of a process,consistent with the technology disclosed herein.

FIG. 8 is a detail end view during operation of an assembly stationconsistent with the technology disclosed herein.

FIG. 9 is a detail view of a portion of an assembly station havingreceived window unit components consistent with the technology disclosedherein.

FIG. 10 is a perspective view of another embodiment of an assemblystation consistent with the technology disclosed herein.

FIG. 11 is a front view of the embodiment depicted in FIG. 10.

FIG. 12 is a view of the embodiment depicted in FIG. 10, havingmaximally-sized window unit components.

FIG. 13 depicts a schematic of an example window unit consistent withthe technology disclosed herein.

FIG. 14 depicts a schematic side view of the example window unit of FIG.13.

FIG. 15 depicts a schematic side view of another example window unitconsistent with the technology disclosed herein.

FIG. 16 depicts a schematic isometric view of a portion of anotherexample window unit component consistent with the technology disclosedherein.

Corresponding reference numerals indicate corresponding parts throughoutthe several views of the drawings.

DETAILED DESCRIPTION

Insulated glass unit (IGU) assembly systems involve arranging two ormore transparent window components, e.g., panes of glass, spaced apartfrom each other. The transparent window components can be spaced apartfrom each other by inserting one or more spacers between the transparentwindow components. During assembly, IGU assembly systems typicallyutilize a vacuum system to remove a transparent window component off ofa float table and place the transparent window component onto anassembly station. These vacuum systems require a large vacuum back platethat prevents an operator of the IGU assembly system from being able tosee the process during operation. These vacuum systems are also complex,expensive, and slow. In some cases, the transparent window componentscan fall from the vacuum back plate and break.

Gas filling of the IGUs and/or pumping down the pressure in the IGUs toa near-vacuum pressure can be performed in various manners. Onetechnique is to form a sealed IGU and then drill or otherwise form atemporary hole in the seal, the spacer, or one of the transparent windowcomponents to thereby to inject the gas, e.g., argon. This temporaryhole can then be sealed. An alternative technique is to utilize specialsealable conveyors to create a temporary seal with a gap or temporaryhole in the IGU to thereby inject the gas, after which an actual oradditional seal can be applied. The pressure in the IGUs can also bepumped down to near-vacuum using either of these techniques. Both ofthese techniques, however, are complex, slow, and require additionalequipment, which increases costs.

Accordingly, a window unit assembly station and method are presented.The window unit assembly station and method of the present disclosureutilize mechanical components instead of a vacuum system during theactual assembly of an IGU. Compared to the vacuum system, thesemechanical components are simpler, faster/cheaper, and allow theoperator to see the process. These mechanical components also providefor only partially connecting the two or more transparent windowcomponents with the one or more spacers, e.g., at a top portion of theIGU, thereby leaving a gap, e.g., at the bottom, for gas filling in anenclosure.

Example embodiments will now be described more fully with reference tothe accompanying drawings.

FIG. 1 depicts a perspective view of an assembly station 100 consistentwith the technology disclosed herein. The assembly station 100 has aframe 110, an assembly table 120, a press bar 130, a blower 140, and aconveyor assembly 200. The assembly station 100 is holding window unitcomponents 300. The frame 110 is generally configured to allow theassembly station 100 to be free-standing. FIG. 2 depicts a front view ofthe assembly station of FIG. 1, where a conveyor housing 260 is disposedover portions of the conveyor assembly 200. FIG. 3 depicts the assemblystation of FIG. 1 from a first end 126.

The assembly table 120 defines a table surface 121 configured to receivewindow unit components such as window panes, window pane assemblies, andthe like. The table surface 121 is substantially planar. The tablesurface 121 is generally configured to be at a slight incline relativeto a vertical position, such that gravity assists in keeping the windowunit components 300 in position on the assembly table 120. In a varietyof embodiments, the table surface is inclined relative to a verticalposition by at least 1 degree, at least 2 degrees and at least 3degrees. In one particular embodiment, the table surface is inclinedrelative to a vertical position by about 7 degrees.

The assembly table 120 defines a plurality of openings 122 through theassembly table 120 and the table surface 121 that allow passage of airto the table surface 121. The blower 140 provides pressurized air topass through the plurality of openings 122 defined by the assembly table120. As such, an air pathway is defined from the blower 140 to apressurized air tank (not shown) through the plurality of openings 122of the assembly table 120 such that the air tank, the blower 140, andthe plurality of openings 122 are in fluid communication. Such aconfiguration reduces friction between the window unit components 300and the table surface 121. The assembly table 120 also definesincremental grooves 124 extending from the top end 127 to the bottom end125 of the assembly table 120 along the table surface 121, which will bedescribed in more detail, below.

The press bar 130 extends substantially across the width of the assemblytable 120. The press bar 130 is translatable parallel to the tablesurface 121 from the top end 127 to the bottom end 125 of the tablesurface 121. The press bar 130 is configured to align with a first edge302 of the window unit components 300 and assemble the window unitcomponents 300 together to form a window unit. In a variety ofembodiments, the press bar 130 presses the window unit components 300together along the first edge 302. The press bar 300 is also generallyconfigured to translate a first window unit component from the tablesurface 121 of the assembly table 120 in a direction generallyperpendicular to the table surface 121 of the assembly table 120, whichwill be described in more detail, below.

The conveyor assembly 200 is generally configured to linearly translatewindow unit components from the first end 126 of the assembly tabletowards a second end 128 of the assembly table 120 via a translationpathway 270. Components of the conveyor assembly 200 along thetranslation pathway 270 define a translation surface 272 that isconfigured to frictionally engage each of the window unit components 300along portions of the surfaces of their bottom edges 304. Thetranslation pathway 270 is defined by at least a conveyor belt 230 and,periodically, one or more projection components 210, where theprojection components are slide rollers 210. In a variety of embodimentsthe translation pathway 270 is parallel to the table surface 121. Thetranslation surface 272 is defined by at least portions of the conveyorbelt 230 along the translation pathway 270. The conveyor assembly 200generally has components including a drive roller 220, the conveyor belt230, the slide rollers 210, and a combination of idler rollers 240and/or idler gears 250 to translate the conveyor belt 230 and adjusttension of the conveyor belt 230. The conveyor assembly 200 is furtherconfigured to align a first window unit component and a second windowunit component, which will be described in more detail, below.

FIGS. 4-7 are schematic representations of incremental process stepsconsistent with the technology disclosed herein as viewed from a secondend 128 of the assembly station 100. FIG. 4 depicts a first window unitcomponent 310 having been translated towards the second end 128 of theassembly table 120 along the assembly table surface 121 and atranslation pathway 270 defined by the conveyor assembly 200. FIGS. 5-6depict the translation of the first window unit component 310 in adirection substantially perpendicular to the table surface 121. FIG. 7depicts a second window unit component 320 having been translated to bealigned with the first window unit component 310 to be assembled.

Turning now to FIG. 4, the first window unit component 310 has beenreceived by the assembly station 100. In a variety of embodiments thefirst window unit component 310 is at least a window pane, and caninclude other components as well. In a variety of embodiments the firstwindow unit component 310 is received by the assembly station 100 from aprevious station in a manufacturing line. A portion of the bottomsurface of the bottom edge 312 of the first window unit component 310 isfrictionally engaged by at least a portion of the translation surface272 along the translation pathway 270 on the first end 126 of theassembly station 100 (See FIG. 1), and the translation surface 272 istranslated, thereby translating the window unit component 310 towardsthe second end 128 of the assembly station 100 to a position consistentwith that represented in FIG. 2. The translation pathway 270 ispartially defined by a portion of the outer annular receiving surface214 of each of a plurality of slide rollers 210 disposed adjacent to theassembly table 121, so that the first window unit component ispositioned on at least one slide roller. In a variety of embodiments theslide rollers 210 are idler rollers.

One or more fingers 132 (See FIG. 5 for an unobstructed view) of thepress bar 130 translates along the table surface 121 from top to bottomof the table surface to a position clear of the top edge 314 of thewindow unit component 310. The fingers 132 translate towards the tablesurface 121 and each incremental finger 132 is received by anincremental groove 124 defined by the assembly table 120. The fingers132 translate along the table surface 121 towards the top edge 314 ofthe window unit component 310 such that an inner surface 134 of thefinger 132 sits adjacent to the back surface 316 of the window unitcomponent 310 (See FIG. 5).

Generally, each of the fingers 132 has an extension component 133 thatextends from the press bar 130 in a direction towards the table surface121 and a contact component that extends generally parallel to the tablesurface 121. The contact component defines a contact surface that is theinner surface 134 of the finger 132. The extension component 133 and thecontact surface 134 enable the finger 132 to receive an edge of a windowunit component, including the surface of the first window unit component310 that abuts the table surface 121.

Each of the incremental grooves 124 are generally sized to accommodatethe width and depth of the corresponding finger 132 that will bereceived. Generally, each of the fingers 132 are similarly sized and,likewise, each of the grooves 124 are similarly sized. In oneembodiment, the width of each groove is about 1-inch. In one embodiment,the depth of each groove is about ⅜-inches. Those having skill in theart will appreciate the variety of dimensions that can be used for thesecomponents.

Referring now to FIG. 5, the slide rollers 210 are extended from thetranslation pathway 270, and in a direction generally perpendicular to,the table surface 121. A first annular ridge 212 and a second annularridge 216 prevent translation of the bottom edge 312 of the first windowunit component 310 beyond the outer annular receiving surface 214 ofeach of the slide rollers 210. As such, when the slide rollers 210extend from the translation pathway 270, the bottom edge 312 of thefirst window unit component 310 is likewise translated away from thetranslation pathway 270.

While in the embodiments disclosed herein slide rollers are disclosed,those having skill in the art will appreciate that other structures canbe used that are positioned to mutually define the translation pathway,receive a surface of a first window unit component, and extend to aposition outside of the translation pathway. Such components are broadlyreferred to herein as projection components. In one alternativeembodiment, for example, each of one or more projection componentsdefines a stationary receiving surface rather than an annular, rotatablereceiving surface of a slide roller. In such an embodiment, thestationary receiving surface can be configured to create relatively lowfriction forces to allow translation of window components thereon.Ridges can similarly abut the receiving surface of such a projectioncomponent to prevent translation of a window unit component beyond thatreceiving surface. Projection components can have other configurations,as well.

Referring back to FIG. 5, in a variety of embodiments, prior toextension of the slide rollers 210, the translation surface 272 definedby the conveyor assembly 200 is temporarily removed from the translationpathway 270 to prevent interference between the translation surface 272and the first window unit component 310 during extension of the sliderollers 210. In one such embodiment, portions of the conveyor assembly200 and/or the translation surface 272 are pivotably coupled to theassembly station frame 110 or the assembly table 120 such that thetranslation surface 272 of the conveyor assembly 200 is pivoted out ofthe translation pathway 270 before extension of the slide rollers 210,and pivoted back to the translation pathway 270 following extension ofthe slide rollers 210. Other mechanisms to temporarily remove thetranslation surface 272 from the translation pathway 270 will also beappreciated by those having skill in the art.

In substantial unison with extension of the slide rollers 210, thefingers 132 are translated away from the table surface 121, whichtranslates the top edge 314 of the first window unit component 310 awayfrom the table surface 121. FIG. 6 depicts the first window unitcomponent 310 in an assembly position between the slide rollers 210 andthe fingers 132. With the first window unit component 310 in theassembly position and cleared from the translation pathway 270, thesecond window unit component 320 can be translated along the tablesurface 121 and the translation pathway 270 to the assembly position.The assembly position for the second window unit component 320 isdepicted in FIGS. 7 and 9. The “assembly position” is defined herein asthe position of the applicable window unit components immediately priorto bringing the window unit components into contact.

A portion of the bottom surface of the bottom edge 327 of the secondwindow unit component 320 is frictionally engaged by the translationsurface 272 defined by conveyor assembly 200 components along thetranslation pathway 270, and the second window unit component 320 istranslated to an assembly position such as that depicted in FIG. 7. In avariety of embodiments the second window unit component 320 is receivedby the assembly station 100 from a previous station in a manufacturingline. The slide rollers 210 are no longer disposed along the translationpathway 270, which allows linear translation of the second window unitcomponent 320 from the first end 126 (See FIG. 1) to the second end 128of the assembly station 100 along the linear translation pathway definedby the remainder of the translation surface 272 of the conveyorassembly.

In the current embodiment, the second window unit component 320 is asecond window pane 322 having a window spacer 324 coupled thereto. Insome embodiments, the second window unit component can be multiplewindow panes coupled to one or more window spacers. The second windowunit component is generally configured to be assembled with the firstwindow unit component. In the current example, the window spacer 324 hasan exposed edge 326 on which sealant is disposed. The exposed edge 326of the window spacer 324 is configured to receive the first window unitcomponent 310.

When the second window unit component 320 is in the assembly position,the top edge 314 of the first window unit component 310 is released bythe fingers 132 to be substantially aligned with the top edge 328 of thesecond window unit component 320, particularly, the top edge 328 of thesecond window pane 322. In a variety of embodiments, prior to releasingthe top edge 314 of the first window unit component 310, the fingers 132and/or the slide rollers 210 can be translated towards the second windowunit component 320 to better align the first window unit component 310and the second window unit component 320. In some embodiments, the sliderollers 210 are retracted towards the table surface and, therefore, thesecond window unit component 320, to bring the first window unitcomponent 310 in contact with the second window unit component 320. FIG.7 shows the fingers 132 after releasing the first window unit component310 to be in contact with the second window component 320.

In a variety of embodiments, after the top edge 314 of the first windowunit component 310 is released, the push bar 130 makes contact with thefront surface 318 of the first window unit component 310 towards the topedge 314 and compresses the first window unit component 310 against thesealant on the exposed edge 326 of the window spacer 324 to couple thewindow unit components 310, 320. In a variety of embodiments, the pushbar 130 compresses the first window unit component 310 and the secondwindow unit component 320 against the table surface 121 to apre-determined width.

FIG. 8 depicts a detail end view of a push bar 130 having fingers 132that are engaging the top edge 314 of a first window unit component 310,consistent with embodiments of an assembly station 100. In FIG. 8, bothof the first and second window unit components are in the assemblyposition, about to be brought into contact with each other. In thecurrent embodiment, the inner surface of each of the fingers 132 definesa contact surface 134, which is configured to make contact with aportion of the back surface 316 of the first window unit component 310.The contact surface 134 is generally configured to limit scratching orother marking on the first window unit component 310. Likewise, the pushbar 130 defines a push surface 136 that is configured to make contactwith the front surface 318 of the first window unit component 310, andis similarly configured to limit scratching or other marking on thefirst window unit component 310. The push surface 136 extends far enoughbelow the fingers 132 so that the push surface 136 can contact the frontsurface 318 while the fingers are clear of the top edge 314.

Upon coupling the top edge 314 of the first window unit component 310with the second window unit component 320, the window unit 300 can betranslated to another manufacturing station. In one embodiment, thewindow unit 300 is translated to a gas-filling station, where the spacedefined between the first window unit component 310 and the secondwindow unit component 320 is filled with a gas. The window unit 300 canalso be translated to other manufacturing stations, as well. In oneembodiment, the partially-mated first window unit component 310 and thesecond window unit component 320 can be translated to a gas-fillingstation that includes an enclosure. The enclosure can fully enclose thepartially-mated first window unit component and the second window unitcomponent 320. Gas-filling can then occur, after which the first windowunit component 310 can be fully-mated with the second window unitcomponent 320 and sealed, thereby creating a sealed gas-filled IGU. Inone embodiment, the enclosure can be pumped down to near-vacuum prior toor during the gas filling.

FIG. 9 is a detail view of a portion of an assembly station 100 havingreceived window unit components 300 consistent with the technologydisclosed herein. The assembly station 100 has at least an assemblytable 120 and a conveyor assembly 200, both of which are partiallyviewable. The window unit components 300 are defined by a firstcomponent 310 and a second component 320 where, in the currentembodiment, the first component 310 is a first window pane and thesecond component 320 is a second window pane 322 having a window spacer324 coupled thereto.

A translation surface 272 along the translation pathway 270 is incontact with at least a portion of the surface of the bottom edge 327 ofthe second window unit component 320. Each of the plurality of sliderollers 210 defines an outer annular receiving surface 214 that is incontact with a portion of the surface of the bottom edge 312 of thefirst window unit component 310. In the current FIG. 9, the outerannular receiving surfaces 214 of the slide rollers 210 have beentranslated outwardly generally perpendicularly from the table surface121 so that the outer annular receiving surfaces 214 lie outside thetranslation pathway 270.

In the current embodiment, the first window component 310 and the secondwindow component 320 are aligned via the use of a mechanical stop gate280 that is linearly translatable up and down to selectively physicallyobstruct the translation pathway 270. In use, the mechanical stop gate280 can be positioned to obstruct the translation pathway 270 duringtranslation of the first window unit component 310 and the second windowunit component 320 such that both the first and second window unitcomponents 310, 320 are eventually aligned with the mechanical stop gate280. The stop gate 280 could also be linearly translatable in otherdirections, as well. Those having skill in the art will appreciate thatother approaches to aligning the window components can also be used.

In the current embodiment, each of the slide rollers 210 has anextension portion 219 that defines a secondary support surface 218 thatmerges with the translation pathway 270 upon extension of the sliderollers 210. In such an embodiment portions of the extension surface 218support the second window unit component 320 along the surface of thebottom edge 327 when the slide rollers 210 are in the extended position.In some other embodiments, an extension portion associated with a slideroller 210 does not selectively define the translation pathway 270.

FIG. 10 depicts a perspective view of another embodiment of an assemblystation 400 consistent with the technology disclosed herein, and FIG. 11depicts a front view of the system of FIG. 10. The assembly station 400has a frame 410, an assembly table 420 defining a table surface 421, apress bar 430, and a conveyor assembly 440. The assembly station 400 isholding window unit components 450. This embodiment is generally similarto the embodiments previously depicted, except for, in particular, theconfiguration of the conveyor assembly 440. This particular embodimentlacks the drive roller coupled to a single conveyor belt depicted inFIG. 1, and the conveyor assembly 440 has a series of alternatingconveyor belt segments 442 and slide rollers 444, where the conveyorbelt segments 442 and the annular receiving surfaces of the sliderollers 444 mutually define a translation pathway 470 for a first windowunit component. In such an embodiment multiple driving mechanisms can beused, or a single driving mechanism as will be understood in the art.Similar to the embodiments depicted previously, the slide rollers areconfigured to translate outward, substantially perpendicularly from thetable surface 421 to remove the slide rollers 444 from intersecting withthe translation pathway 470.

As previously discussed, in some prior art systems vacuum devices areused to lift and hold window panes and bring them into contact withother window components. However vacuum devices that contact one of themajor surfaces of the pane also have the potential to leave a mark onthe pane. In the embodiments of the assembly stations described herein,it is possible to manipulate window panes and window subassemblies tobuild window units without using a vacuum device, by using thestructures described herein.

FIG. 12 depicts an assembly station 400 consistent with the embodimentdepicted in FIGS. 10-11. In FIG. 12, the window unit components 450 arethe maximum size accommodated by the assembly station 400. As such, thewindow unit components 450 extend across the width and the height of thetable surface 421 of the assembly table 420.

Assembly stations consistent with the technology disclosed herein arecompatible with window unit components having a wide range of sizes.Generally, the surface area of the table surface of the assembly tablecan define an upper limit to the size of the window components. In oneembodiment the maximum window size that can be accommodated is 82 inchesby 60 inches. It should be appreciated that other window sizes can beaccommodated. The spacing of the slide rollers can help define a lowerlimit of the size of the window components that can be accommodated sothat adequate support is provided to the window unit components. Also,the spacing of the components in the conveyor assembly can also helpdefine a lower limit to the size of the accommodated window components.Furthermore, spacing of the incremental grooves and corresponding pressbar fingers can also help define a lower limit to the size of theaccommodated window components. Other factors can also limit the sizesof the window components that are accommodated, including the materialproperties of the window components such as structural rigidity,although structural supports incorporated in the current design couldhelp alleviate those limitations. In one embodiment, the window unitassembly station consistent with the technology disclosed herein canaccommodate components for a window unit as small as 14×14 inches.

FIGS. 13 and 14 are schematics of an example window unit consistent withthe technology disclosed herein. The window unit 10 has a first windowpane 12, a second window pane 14 and a spacer 16 disposed between thefirst and second window panes 12, 14. The first and second window panes12, 14 are adapted to allow at least some light to pass through thewindow panes 12, 14. The first and second window panes 12, 14 are madeof a translucent or transparent material. In at least one embodiment,the first and second window panes 12, 14 are made of a glass material.In another embodiment, the first and second window panes 12, 14 are madeof a plastic material. In yet another embodiment, the first window pane12 is a different material than the second window pane 14.

The first window pane 12 has a first surface 18 and an oppositelydisposed second surface 20. The second window pane 14 likewise has afirst surface 22 and an oppositely disposed second surface 24. Thespacer 16 is disposed between the first and second window panes 12, 14to keep the first and second window panes 12, 14 spaced apart from eachother. The spacer 16 is generally adapted to withstand compressiveforces applied to the first and second window panes 12, 14 and/or tomaintain a desired space between the first and second window panes 12,14.

The spacer 16 is sealingly engaged to each of the first and secondwindow panes 12, 14 at an edge portion 26 of each of the first andsecond window panes 12, 14. In the depicted embodiment, the spacer 16 issealingly engaged to the second surface 20 of the first window pane 12and the second surface 24 of the second window pane 14.

While the example window unit herein has a first window unit componentdisclosed as a window pane and a second window unit component disclosedas a window pane and spacer assembly, such as in the discussionsassociated with FIGS. 4-9, those having skill in the art will appreciatethat each window unit component can have a variety of configurations.The first window unit component is generally configured to be assembledwith the second window unit component. As an example, in window unitshaving three or more window panes and one or more spacers, the firstwindow unit component can be a window pane and the second window unitcomponent can be an assembly of multiple window panes having one or morespacers coupled thereto, where the first window unit component and thesecond window unit component are configured to be assembled. In yetanother example, the first window unit component can be a window panehaving a spacer, and the second window unit component can be a windowpane.

Some assembly stations contemplated that are consistent with thetechnology disclosed herein can be used with window units having threeor more window unit components and one or more spacers. For example,after a first window unit component and a second window unit componentare assembled, the assembly can be translated to a position outside ofthe linear translation pathway, at which point a third window unitcomponent can be translated along the linear translation pathway to anassembly position. The assembly can then be brought into contact withthe third window unit component in accordance with concepts alreadydescribed herein.

In some such embodiments having three or more window unit components,the assembly station disclosed herein can have secondary and eventertiary grooves corresponding secondary and even tertiary fingers toselectively engage additional window unit components. Those embodimentscan additionally have secondary and even tertiary slide rollersinitially disposed along the translation pathway, which are configuredto extend to varying distances to properly align the window unitcomponents for assembly. Those having skill in the art will appreciatethese variances.

FIGS. 15 and 16 depict schematics of two additional types of windowunits that can be assembled using the technology disclosed herein. FIG.15 depicts a window unit 30 having a first window pane 32, a secondwindow pane 34, and a third window pane 36, where the third window pane36 can be referred to as an intermediary pane. A first spacer 38 isdisposed between the first 32 and second 34 window panes, and a secondspacer 39 is disposed between the second 34 and third 36 window panes.The first, second, and third window panes 32, 34, 36 can be similar tothe window panes described in the discussion of FIGS. 13 and 14, above.In addition, the first and second spacer can be similar to the spacerdescribed in the discussion of FIGS. 13 and 14, above. The examplewindow unit configuration depicted in FIG. 15 can be referred to as atriple pane window unit having a stacked configuration.

FIG. 16 depicts a partial isometric schematic of another example triplepane window unit that can be assembled with the technology disclosedherein. The window unit 40 has a first window pane 42, a second windowpane 44, a third window pane 46, and a spacer 48 that sealingly engagesthe first window pane 42 and the second window pane. The third orintermediary window pane 46 is retained between the first window pane 42and second window pane 44 by the spacer 48. Those having skill in theart will appreciate the multiple variations in spacer structure thatwill be compatible with the technology disclosed herein, as well as thevariations in the overall window assembly structure.

Example embodiments are provided so that this disclosure will bethorough, and will fully convey the scope to those who are skilled inthe art. Numerous specific details are set forth such as examples ofspecific components, devices, and methods, to provide a thoroughunderstanding of embodiments of the present disclosure. It will beapparent to those skilled in the art that specific details need not beemployed, that example embodiments may be embodied in many differentforms and that neither should be construed to limit the scope of thedisclosure. In some example embodiments, well-known processes,well-known device structures, and well-known technologies are notdescribed in detail.

The terminology used herein is for the purpose of describing particularexample embodiments only and is not intended to be limiting. As usedherein, the singular forms “a,” “an,” and “the” may be intended toinclude the plural forms as well, unless the context clearly indicatesotherwise. The term “and/or” includes any and all combinations of one ormore of the associated listed items. The terms “comprises,”“comprising,” “including,” and “having,” are inclusive and thereforespecify the presence of stated features, integers, steps, operations,elements, and/or components, but do not preclude the presence oraddition of one or more other features, integers, steps, operations,elements, components, and/or groups thereof. The method steps,processes, and operations described herein are not to be construed asnecessarily requiring their performance in the particular orderdiscussed or illustrated, unless specifically identified as an order ofperformance. It is also to be understood that additional or alternativesteps may be employed.

Although the terms first, second, third, etc. may be used herein todescribe various elements, components, regions, layers and/or sections,these elements, components, regions, layers and/or sections should notbe limited by these terms. These terms may be only used to distinguishone element, component, region, layer or section from another region,layer or section. Terms such as “first,” “second,” and other numericalterms when used herein do not imply a sequence or order unless clearlyindicated by the context. Thus, a first element, component, region,layer or section discussed below could be termed a second element,component, region, layer or section without departing from the teachingsof the example embodiments.

The foregoing description of the embodiments has been provided forpurposes of illustration and description. It is not intended to beexhaustive or to limit the disclosure. Individual elements or featuresof a particular embodiment are generally not limited to that particularembodiment, but, where applicable, are interchangeable and can be usedin a selected embodiment, even if not specifically shown or described.The same may also be varied in many ways. Such variations are not to beregarded as a departure from the disclosure, and all such modificationsare intended to be included within the scope of the disclosure.

What is claimed is:
 1. An insulated glass unit (IGU) assembly stationcomprising: an assembly table defining a planar table surface that isconfigured to receive first and second transparent window components,the table surface being positioned at an incline relative to a verticaldirection that is perpendicular to a ground surface; a conveyor assemblyarranged approximately parallel to the ground surface and configured to(i) contact bottom edges of the first and second transparent windowcomponents and (ii) translate the first and second transparent windowcomponents along a translation pathway from a first end of the tablesurface to a second end of the table surface, the translation pathwaybeing substantially parallel to the table surface; and a projectioncomponent adjacent to the assembly table and configured to engage thefirst transparent window component to translate at least a bottomportion of the first transparent window component between an initialposition and a first assembly position offset from the translationpathway, wherein the projection component movably translates back andforth substantially perpendicular to the table surface movablyoffsetting the conveyor assembly.
 2. The IGU assembly station of claim1, wherein the projection component has a receiving surface betweenfirst and second edges, the receiving surface being configured toreceive a bottom edge of the first transparent window component, whereinthe projection component further includes an extension surfaceconfigured to merge with the translation pathway upon extension of theprojection component to the first assembly position.
 3. The IGU assemblystation of claim 2, further comprising a press bar extendingsubstantially across the table surface and translatable bothsubstantially parallel to the table surface and substantiallyperpendicular to the table surface, the press bar being configured toboth push a front surface of the first transparent window component andsupport a back surface of the first transparent window component.
 4. TheIGU assembly station of claim 3, wherein the conveyor assembly isconfigured to translate the second transparent window component to asecond assembly position where the second transparent window componentis substantially parallel to the table surface and behind the firsttransparent window component after the first transparent windowcomponent is extended to the first assembly position, wherein the secondtransparent window component has a spacer frame attached thereto.
 5. TheIGU assembly station of claim 4, wherein in response to the conveyorassembly translating the second transparent window component to thesecond assembly position, the press bar is configured to push againstthe front surface of the first transparent window component to connectat least a top portion of the first transparent window component to atleast a top portion of the spacer frame to form a partially-mated IGU.6. The IGU assembly station of claim 5, wherein the partially-mated IGUincludes a gap between the bottom portion of the first transparentwindow component and a bottom portion of the spacer frame for receivinggas to form a gas-filled IGU.
 7. The IGU assembly station of claim 4,wherein the assembly table has a groove through the table surface,wherein the press bar includes a finger extending from the press bartowards the table surface, wherein the finger is configured to bereceived by the groove at the initial position of the first transparentwindow component, and wherein the finger is configured to engage a topedge of the first transparent window component and to support the backsurface of the first transparent window component when the firsttransparent window component is offset from the table surface at thefirst assembly position.
 8. The IGU assembly station of claim 7, whereinin response to the conveyor assembly translating the second transparentwindow component to the second assembly position, the finger isconfigured to disengage the top edge of the first transparent windowcomponent and the press bar is configured to push against the frontsurface of the first transparent window component to connect at least atop portion of the first transparent window component to at least a topportion of the spacer frame to form a partially-mated IGU.
 9. The IGUassembly station of claim 8, wherein the partially-mated IGU includes agap between the bottom portion of the first transparent window componentand a bottom portion of the spacer frame for receiving gas to form agas-filled IGU.
 10. The IGU assembly station of claim 3, wherein theconveyor assembly is configured to translate the second transparentwindow component and a third transparent window component to a secondassembly position where the second and third transparent windowcomponents are substantially parallel to the table surface and behindthe first transparent window component after the first transparentwindow component is extended to the first assembly position, wherein thesecond and third transparent window components have one or more spacerframes attached thereto.
 11. The IGU assembly station of claim 10,wherein in response to the conveyor assembly translating the second andthird transparent window components to the second assembly position, thepress bar is configured to push against the front surface of the firsttransparent window component to connect at least a top portion of thefirst transparent window component to at least a top portion of one ofthe one or more spacer frames to obtain a partially-mated IGU.
 12. TheIGU assembly station of claim 11, wherein the partially-mated IGUincludes a gap between the bottom portion of the first transparentwindow component and a bottom portion of the one of the one or morespacer frames for receiving gas to form a gas-filled IGU.
 13. The IGUassembly station of claim 10, wherein the assembly table has a groovethrough the table surface, wherein the press bar includes a fingerextending from the press bar towards the table surface, wherein thefinger is configured to be received by the groove at the initialposition of the first transparent window component, and wherein thefinger is configured to engage a top edge of the first transparentwindow component and to support the back surface of the firsttransparent window component when the first transparent window componentis offset from the table surface at the first assembly position.
 14. TheIGU assembly station of claim 13, wherein in response to the conveyorassembly translating the second and third transparent window componentsto the second assembly position, the finger is configured to disengagethe top edge of the first transparent window component and the press baris configured to push against the front surface of the first transparentwindow component to connect at least a top portion of the firsttransparent window component to at least a top portion of one of the oneor more spacer frames to obtain a partially-mated IGU.
 15. The IGUassembly station of claim 14, wherein the partially-mated IGU includes agap between the bottom portion of the first transparent window componentand a bottom portion of the one of the one or more spacer frames forreceiving gas to form a gas-filled IGU.
 16. The IGU assembly station ofclaim 1, further comprising a press bar translatable both substantiallyparallel to the table surface and substantially perpendicular to thetable surface, the press bar being configured to both push a frontsurface of the first transparent window component and support a backsurface of the first transparent window component.
 17. The IGU assemblystation of claim 1, wherein the table surface defines a groovetherethrough and the press bar further includes a finger extending fromthe press bar towards the table surface, wherein the finger isconfigured to be received by the groove at the initial position of thefirst transparent window component and to both (i) engage a top edge ofthe first transparent window component and (ii) support the back surfaceof the first transparent window component when the first transparentwindow component is offset from the table surface at the first assemblyposition.
 18. An assembly system for an insulated glass unit (IGU), thesystem comprising: an assembly table defining a planar table surfacearranged at an incline with respect to a ground surface and configuredto at least partially support first and second transparent windowcomponents; a conveyor assembly configured to translate the first andsecond transparent window panes along a translation pathway that isapproximately parallel to the table surface; and a slide roller arrangedin the translation pathway and defining a recessed receiving surfaceconfigured to receives a bottom edge of the first and second transparentwindow panes, wherein the slide roller is extendable and retractable inan offset direction approximately perpendicular to the table surface andthe translation pathway to translate at least a bottom portion of one ofthe first and second transparent window panes in the offset direction toa position offset from the translation pathway.
 19. The system of claim18, further comprising a press bar configured to contact both front andback surfaces of the first transparent window pane and to translate atleast an upper portion of the first transparent window pane in theoffset direction to another offset position.
 20. The system of claim 19,wherein: the first and second transparent window panes are sequentiallytranslated along the translation pathway and the second transparentwindow pane includes a spacer frame attached about its perimeter; theconveyor assembly is configured to translate the second transparentwindow component with the spacer frame attached thereto to a positionbetween the table surface and the first transparent window component;and the press bar is further configured to press the front surface ofthe first transparent window pane and the slide roller is configured toretract to its initial, nonoffset position such that the firsttransparent window pane contacts the spacer frame.